caa a22 4500 467942110 CHVBK 20180406153016.0 cr unu---uuuuu 170328e20060701xx s 000 0 eng 10.1007/s00421-006-0192-y doi (NATIONALLICENCE)springer-10.1007/s00421-006-0192-y The effect of varying the time of concentric and eccentric muscle actions during resistance training on skeletal muscle adaptations in women [Elektronische Daten] [Ellen Gillies, Charles Putman, Gordon Bell] This study investigated the effect of manipulating the time to complete both the concentric (CON) and eccentric (ECC) muscle actions during resistance training on strength, skeletal muscle properties and cortisol in women. Twenty-eight women (mean±SE age=24.3±1.1year) with strength training experience completed three training sessions per week for 9weeks. Two sets of four lower body exercises (leg press, parallel squat, knee extension and knee flexion) were completed using 6-8 RM intensity. The long CON (LC) group performed the CON action for 6s and the ECC action for 2s, while the long ECC (LE) group completed the CON and ECC phases for 2 and 6s, respectively. Both groups experienced significant increases in leg press CON only, ECC only and combined ECC and CON maximal strength (1 RM). Immunohistochemical analyses demonstrated that both types I and IIA vastus lateralis fibre areas significantly increased following LC training while only type I fibre area increased following LE training. There was a decrease in MHCIId(x) with a concomitant increase in MHCIIa (P<0.05) in both groups. Twenty-four hour urinary cortisol significantly increased after LC training only. It was concluded that LC resistance training was more effective than LE for increasing both types I and IIA fibre area and cortisol when time under tension and intensity of muscle actions were matched between the two modes of resistance training in young healthy women. Springer-Verlag, 2006 Strength nationallicence Muscle fibre type nationallicence Hypertrophy nationallicence Myosin heavy chain nationallicence Cortisol nationallicence Gillies Ellen E424 Van Vliet Centre, Exercise Biochemistry Laboratory, Faculty of Physical Education and Recreation, University of Alberta, T6G 2H9, Edmonton, AB, Canada aut Putman Charles E424 Van Vliet Centre, Exercise Biochemistry Laboratory, Faculty of Physical Education and Recreation, University of Alberta, T6G 2H9, Edmonton, AB, Canada aut Bell Gordon E424 Van Vliet Centre, Exercise Biochemistry Laboratory, Faculty of Physical Education and Recreation, University of Alberta, T6G 2H9, Edmonton, AB, Canada aut European Journal of Applied Physiology Springer-Verlag 97/4(2006-07-01), 443-453 1439-6319 97:4<443 2006 97 421 https://doi.org/10.1007/s00421-006-0192-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00421-006-0192-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gillies Ellen E424 Van Vliet Centre, Exercise Biochemistry Laboratory, Faculty of Physical Education and Recreation, University of Alberta, T6G 2H9, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Putman Charles E424 Van Vliet Centre, Exercise Biochemistry Laboratory, Faculty of Physical Education and Recreation, University of Alberta, T6G 2H9, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Bell Gordon E424 Van Vliet Centre, Exercise Biochemistry Laboratory, Faculty of Physical Education and Recreation, University of Alberta, T6G 2H9, Edmonton, AB, Canada aut NATIONALLICENCE 773 0- European Journal of Applied Physiology Springer-Verlag 97/4(2006-07-01), 443-453 1439-6319 97:4<443 2006 97 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer